9 | Diagnostics
STOBER
76
05/2019 | ID 442793.01
9.1.1
Fieldbus state
The LEDs for the diagnostics of the fieldbus state vary depending on the implemented fieldbus system or communication
module.
9.1.1.1
EtherCAT state
There are 2 LEDs on the front of the drive controller that provide information about the connection between EtherCAT
master and slave and about the state of the data exchange. This information can also be read out in parameter A255
EtherCAT Device State. If the drive controller includes the SY6 safety module, the STO and SS1 safety functions are activated
over EtherCAT FSoE. In this case, an additional LED on the front of the device provides information about the FSoE state.
2
1
Err
Run
FSoE
Fig. 13: LEDs for the EtherCAT state
1
Red: Error
2
Green: Run
Red LED
Behavior
Error
Description
Off
No Error
No error
Flashing
Invalid Configuration
Invalid configuration
1x flash
Unsolicited State Change The EtherCAT slave changed operating states
by itself
2x flash
Application Watchdog
Timeout
The EtherCAT slave did not receive new PDO
data during the configured watchdog
timeout
Tab. 83: Meaning of the red LED (error)
Green LED
Behavior
Operating state
Description
Off
Init
No communication between the EtherCAT
master and slave; the configuration starts,
saved values are loaded
Flashing
Pre-operational
No PDO communication; the EtherCAT
master and slave exchange application-
specific parameters via SDOs
1x flash
Safe-operational
The EtherCAT slave sends the current actual
values to the EtherCAT master, ignores its set
values and refers to internal default values
On
Operational
Normal operation: The EtherCAT master and
slave exchange set and actual values
Tab. 84: Meaning of the green LED (run)